Rotary dryer is a large-scale machine used to dry shaped fertilizer granules, which is one of the essential equipment in the fertilizer industry. The rotary drum drying machine uses a fan installed in the rear of the machine to continuously draw the hot heat in hot blast stove at the nose to rear of the machine. With the continuous rotation of the machine body, the internal lifting plate continuously raises the formed particles. Throw it down, making the material fully contact with the hot air to take away the moisture in it, so as to achieve the purpose of uniform drying. The rotary drum drying has the advantages of reasonable structure, excellent production, high output, low energy consumption and convenient operation. The quality of our products is guaranteed, and the reputation is supreme for free installation and commissioning.
Where can You the Rotary Dryer be Used?
Rotary dryers are widely used in building materials, metallurgy, chemical and cement industries to dry slag limestone, coal powder, slag, clay and other materials. The machine is mainly composed of rotating body, lifting plate, transmission device, supporting device and sealing ring. In the center of the rotary dryer, it is possible to avoid adding a dispersing mechanism. The wet material that enters the drying cylinder is repeatedly picked up and thrown off by the copy plate on the wall of the drum, and is broken into fine particles by the dispersing device during the falling process. ,The specific area is greatly increased, and it is fully contacted and dred with hot air. The drying efficiency is as high as 80%, which is significantly higher than similar domestic equipment.
How to Dry the Moisture Content of Granules?
The inside of the rotary dryer is welded with various copy plates with different angles in a staggered arrangement from the front to the back. According to the type of feed material, a squash ball with a diameter is added to the barrel to prevent highly viscous materials from sticking to the barrel wall. The machine is mainly composed of rotating body, lifting plate, transmission device, supporting device and sealing ring. The dryer is a cylinder that is slightly inclined to the horizontal direction. The material is added from the higher end, and the high-temperature hot flue gas flows into the cylinder concurrently with the material. As the cylinder rotates, the material moves to a lower level due to gravity. One end. A copy board is installed on the inner wall of the cylinder to pick up and sprinkle the material to increase the contact surface between the material and the airflow, so as to increase the drying rate and promote the advancement of the material. The dried product is collected from the lower part of the bottom end.
9 Highlights Designs in the Construction of Rotary Drying Equipment
- The rotary dryer has high thermal efficiency and obvious energy saving effect. After testing, the thermal efficiency greatly exceeds the level of the traditional single-cylinder dryer about. After the dryer is put into production, the coal-saving effect is obvious.
- The drying mechanism is scientific and fair, and energy-saving. The material exchanges heat with the hot air flow in the inner cylinder in the form of radiation, convection and conduction, and the heat exchange in the outer cylinder is in the form of conduction and convection.
- The length of the dryer is shortened, which is conducive to process layout. The length of the whole machine is about 40 shorter than that of the single-tube dryer, thereby reducing the building area of the plant, saving engineering investment, and being more suitable for the process layout of the old factory renovation.
- The dryer equipment adopts the downstream drying process of materials and hot air flow, which has a wide range of combined use. It can be adapted to the drying of various raw materials such as clay, coal, slag, iron powder. And also suitable for the drying of various bulk materials in metallurgy and chemical industries.
- The rotary dryer has a compact structure. The whole machine is arranged horizontally and adopts supporting wheels to support. The large and small gear transmission is eliminated, and the supporting wheel transmission is replaced, which makes the equipment installation more convenient, the operation simpler, the operation more reliable, and the operation rate higher.
- A variety of lifting board designs, the angular lifting board and the 40 lifting board are organically combined to make the material and hot flue gas exchange more fully, reducing the mechanism of “wind tunnel” in the dryer cylinder.
- Use frequency conversion speed regulation to adjust the rotation speed of the dryer barrel, and use an appropriate rotation speed according to the moisture content and output requirements to ensure the needs of the next process.
- The external surface area of the rotary dryer is more than 30% less than that of the single-cylinder dryer, and the outer cylinder has the effect of heat preservation and heat insulation on the inner cylinder. The surface temperature of the outer cylinder is low, and the heat loss is small. Improved the working environment and working conditions.
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